Which tiered testing structure responds rapidly to public health emergencies using Sentinel, Reference, and National labs?

• A. Sentinel Laboratory Network
• B. National Public Health Laboratory Network
• C. Laboratory Response Network
• D. Global Outbreak Diagnostics Network

Answer: (C)

A tiered Laboratory Response Network is designed to respond rapidly to public health emergencies by organizing labs into three levels: sentinel labs for initial screening and identification, reference labs for confirmatory testing and specialized capabilities, and national labs for definitive testing and surge capacity. This structure enables quick triage of specimens, standardized procedures, and efficient escalation to more advanced testing as needed, which is essential for fast public health decision-making and containment. The other network names either describe incomplete or differently named systems and do not capture the explicit three-tier framework that uses sentinel, reference, and national labs to coordinate rapid responses.